Sash-lock



C. LOMBARDO.

SASH LOCK.

APPLICATION FILED JULY 16, I918- Patented J 11110 22, 1920.

UNITED STATES PATENT OFFICE.

CHARLES LOMBARDO, OF WATERFORD, NEW JERSEY.

SASH-LOGK.

Specification of Letters Patent. I

Application'filed July 16, 1918. Serial No. 245,157.

To all whom it may concern:

Be it known that I, CHARLES LoMBARDo, a citizen of the United States,residing at lVaterford, in the county of Camden, State of New Jersey,have invented certain new and useful Improvements in Sash-Locks; andI-do hereby declare the following to be a full, clear, and exactdescription of the invention, such as. will enable others skilled in theart to which it appertains to make and use the same.

The present invention relates to builders hardware, and more especiallyto sash locks; and the broad object of the same is to produce a bolt tobe mounted into the mid-rail of one sash so that it may be projected byscrew action into the mid-rail of the other sash.

Specifically the invention consists in novel means for mounting the boltwithin sleeves in both sashes so that when it has been advanced tolocking position it is bound or cramped in place, and when itisretracted or thrown out of locking position it is held so by meansdescribed below.

lVith the above and other objects and advantages in view, theinventionresides more particularly in the novel combination, formationand arrangement of parts hereinafter described and particularly pointedout in the appended claim.

In the accompanying drawings:

Figure 1 is a sectional view taken transversely through the meetingrails of a pair of sashes equipped with the improved looking device.

Fig. 2' is a sectional view taken trans versely on the line 2-2 of Fig.1.

Fig. 3 is a perspective view of the locking bolt and sleeve, lookingtoward one side of the sleeve.

Fig. 4 is a similar view, but looking toward the other side of thesleeve.

Referring now more particularly to the accompanying drawings, 5 and 6designate a pair of meeting horizontal sash rails, although it will beappreciated that the present device may as well be used in conj unctionwith any other pair of meeting members. The inner rail 5 is providedwith a transverse bore therethrough and positioned in this bore is asleeve 8 which is secured in place by a face plate 9 at one end thereofwhich seats against the edge of the rail 5 remote from the rail 6 andwhich is end of the sleeve,

in turn secured by screws 9 passed therethrough into the rail. Slidablein the sleeve and projecting outwardly of the face plate is a bolt 10having a finger piece 11 on its outer end and having its outer portionreduced whereby to form a seating shoulder against which is engaged oneend of coil spring 12 mounted onthe reduced portion of the bolt withinthe sleeve and bearing at its other end against a flange 13 at the outerY which flange also forms a bearing for the reduced portlon of the bolt.The sleeve is provided with a spiral slot 14 which, terminates at itsends in straight portions 15 and 15 extending in planes at right-.angles to the axis of the sleeve, and a pin 16 is projected radiallyfrom the intermediate portion of the bolt and travels in said slot, thestraight extension 15 which is at the outer end of the sleeve providinga means for holding the bolt retracted in the sleeve against the actionof the spring. For receiving the bolt 10, the rail 6 is provided with akeeper socket sleeve 17 which is set into the rail 6 and secured theretoby outstanding wings l8 countersunk in theedge of the rail. A lug 19projects inwardly from the wall of the sleeve 17 and this lug isengageable in a spiral groove 20 formed in the inner end portion of thebolt and open at the inner extremity thereof. Thus, with the boltretracted and lying entirely within the sleeve 8, the sashes are freelyalforded their normal movements, and when the sashes are closed, withthe sleeve 8 and socket sleeve 17 in alinement, the bolt may be rotated,whereby its pin or lug 16, traveling in the slot 14: will force the boltinwardly into the keeper sleeve 17, the lug 19 of said keeper sleeveengaging in the groove 20 of the bolt. As the lug or pin 16 reaches theend of the slot 141 and slides in the straight portion 15 of said slotfurther advance of the bolt is checked and continued rotation of thebolt will serve to clampingly bind the sash rails together by reasonof'the continued pull exerted by the keeper lug 19 in the bolt groove20. It will be observed that the expansive work of these great springstends to advance the bolt, and the pin 16 thereof would be held in thespace portions 15 of the slot and the bolt projected, even if the boltwere not pulled to work by the groove 20 engaging the pin 19. Ontheother hand, when the bolt is retracted the spring is compressed, andtherefore it tends to bind the pin in the straight portion 15 of theslot 14 so as to hold the bolt in retracted position. Furthermore thebolt at all times is prevented from rattling by the presence of thespring.

A comparatively simple and efficient device has thus been provided whichmay be readily mounted in a pair of meeting sash rails in a mannerpresenting a most neat and attractive appearance by the elimination ofexposed mechanism, it being particularly noted that manipulation of thedevice to open the same from the exterior of the window is impossible,since even were sufiicient space afforded between the sash rails intheir locked position to permit insertion of a knife between the railsfor engagement with a bolt, the knife or other tool could only slideagainst the side of the bolt, and could not move the bolt longitudinallyof its spiral slot connections.

What is claimed is:'

A lock of the class described comprising a keeper adapted for securementin a member to be locked,a lug projecting from the inner wall of saidkeeper, a sleeve adapted for securement in a cooperating member to belocked and provided with a spiral slot having extensions at its endsdisposed in planes at right angles to the axis of the sleeve, a boltrotatably and slidably mounted in the sleeve'and provided adjacent oneend with a spiral groove for receiving the lug of the keeper, and a pinon the bolt engaged in said spiral slot and movable into its extensionsat the extreme positions of said bolt.

In testimony whereof, I afiix my signature, in the presence of twowitnesses.

CHARLES LOMBARDO.

Witnesses:

GEO. H. Knunonn, HERMINA KRUEGER.

